Optimizing the use of sex-sorted sperm in timed artificial insemination programs for suckled beef cows
Three experiments were designed to evaluate methods to optimize the use of sex-sorted sperm in timed AI (TAI) programs for suckled beef cows. In all 3 experiments, suckled Bos indicus cows were synchronized using an intravaginal progesterone (P4) device during 8 d and a 2.0-mg injection of intramusc...
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| Veröffentlicht in: | Journal of animal science 2012-06, Vol.90 (6), p.1816-1823 |
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| creator | Sá Filho, M F Girotto, R Abe, E K Penteado, L Campos Filho, E P Moreno, J F Sala, R V Nichi, M Baruselli, P S |
| description | Three experiments were designed to evaluate methods to optimize the use of sex-sorted sperm in timed AI (TAI) programs for suckled beef cows. In all 3 experiments, suckled Bos indicus cows were synchronized using an intravaginal progesterone (P4) device during 8 d and a 2.0-mg injection of intramuscular estradiol benzoate (EB) at device insertion. The females received PG and eCG (300 IU) at P4 device removal and 1.0 mg of EB 24 h later. The cows were inseminated 60 to 64 h after P4 device withdrawal. All cows had their ovaries scanned by transrectal ultrasound at TAI to indentify and to measure the largest follicle (LF) present. In Exp. 1, a total of 853 cows had their LF classified as |
| doi_str_mv | 10.2527/jas.2011-4523 |
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In all 3 experiments, suckled Bos indicus cows were synchronized using an intravaginal progesterone (P4) device during 8 d and a 2.0-mg injection of intramuscular estradiol benzoate (EB) at device insertion. The females received PG and eCG (300 IU) at P4 device removal and 1.0 mg of EB 24 h later. The cows were inseminated 60 to 64 h after P4 device withdrawal. All cows had their ovaries scanned by transrectal ultrasound at TAI to indentify and to measure the largest follicle (LF) present. In Exp. 1, a total of 853 cows had their LF classified as <9 mm or ≥9 mm at the time of TAI; these cows were then randomly assigned to 4 groups according to their LF diameter (<9 mm or ≥9 mm) and the type of sperm used (sex-sorted or non-sex-sorted). There was an interaction (P = 0.02) between the type of sperm and LF diameter beginning at TAI[non-sex-sorted ≥9 mm = 58.9%a (126/214); non-sex-sorted <9 mm = 49.5%b (106/214);sex-sorted ≥9 mm = 56.8%ab (134/236); and sex-sorted <9 mm = 31.2%c (59/189), a≠b≠c = P < 0.05]. In Exp. 2, suckled cows (n = 491) were classified immediately before TAI as having displayed estrus or not (estrus or no estrus) between P4 device removal and TAI. These cows were randomly assigned to 4 groups according to the occurrence of estrus and the type of sperm (sex-sorted or non-sex-sorted). There were effects of the occurrence of estrus (P = 0.0003) and the type of sperm (P = 0.05) on pregnancy per AI [P/AI; no estrus, non-sex-sorted = 43.6% (27/62); estrus, non-sex-sorted = 58.5%; (107/183); no estrus, sex-sorted = 33.9% (21/62), and estrus, sex-sorted = 50.0% (92/184)]; however, no interaction between the occurrence of estrus and type of sperm was observed (P = 0.87). In Exp. 3, a total of 200 suckled cows presenting LF ≥9 mm at TAI were randomly assigned to receive sex-sorted sperm deposited into the uterine body (n = 100) or into the uterine horn ipsilateral to the recorded LF (n = 100). No effect of deeper AI on P/AI was found (P = 0.57). Therefore, the LF diameter at TAI and the occurrence of estrus can be used as selection criteria to identify cows with greater odds of pregnancy to receive sex-sorted sperm in TAI programs. In addition, performing TAI with sex-sorted sperm deeper into the uterus did not alter the pregnancy results.</description><identifier>EISSN: 1525-3163</identifier><identifier>DOI: 10.2527/jas.2011-4523</identifier><identifier>PMID: 22205672</identifier><language>eng</language><publisher>United States</publisher><subject>Animals ; Animals, Suckling ; Cattle ; Estrus Synchronization - methods ; Female ; Insemination, Artificial - methods ; Insemination, Artificial - veterinary ; Lactation ; Male ; Pregnancy ; Sex Preselection - veterinary ; Spermatozoa - physiology</subject><ispartof>Journal of animal science, 2012-06, Vol.90 (6), p.1816-1823</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22205672$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sá Filho, M F</creatorcontrib><creatorcontrib>Girotto, R</creatorcontrib><creatorcontrib>Abe, E K</creatorcontrib><creatorcontrib>Penteado, L</creatorcontrib><creatorcontrib>Campos Filho, E P</creatorcontrib><creatorcontrib>Moreno, J F</creatorcontrib><creatorcontrib>Sala, R V</creatorcontrib><creatorcontrib>Nichi, M</creatorcontrib><creatorcontrib>Baruselli, P S</creatorcontrib><title>Optimizing the use of sex-sorted sperm in timed artificial insemination programs for suckled beef cows</title><title>Journal of animal science</title><addtitle>J Anim Sci</addtitle><description>Three experiments were designed to evaluate methods to optimize the use of sex-sorted sperm in timed AI (TAI) programs for suckled beef cows. In all 3 experiments, suckled Bos indicus cows were synchronized using an intravaginal progesterone (P4) device during 8 d and a 2.0-mg injection of intramuscular estradiol benzoate (EB) at device insertion. The females received PG and eCG (300 IU) at P4 device removal and 1.0 mg of EB 24 h later. The cows were inseminated 60 to 64 h after P4 device withdrawal. All cows had their ovaries scanned by transrectal ultrasound at TAI to indentify and to measure the largest follicle (LF) present. In Exp. 1, a total of 853 cows had their LF classified as <9 mm or ≥9 mm at the time of TAI; these cows were then randomly assigned to 4 groups according to their LF diameter (<9 mm or ≥9 mm) and the type of sperm used (sex-sorted or non-sex-sorted). There was an interaction (P = 0.02) between the type of sperm and LF diameter beginning at TAI[non-sex-sorted ≥9 mm = 58.9%a (126/214); non-sex-sorted <9 mm = 49.5%b (106/214);sex-sorted ≥9 mm = 56.8%ab (134/236); and sex-sorted <9 mm = 31.2%c (59/189), a≠b≠c = P < 0.05]. In Exp. 2, suckled cows (n = 491) were classified immediately before TAI as having displayed estrus or not (estrus or no estrus) between P4 device removal and TAI. These cows were randomly assigned to 4 groups according to the occurrence of estrus and the type of sperm (sex-sorted or non-sex-sorted). There were effects of the occurrence of estrus (P = 0.0003) and the type of sperm (P = 0.05) on pregnancy per AI [P/AI; no estrus, non-sex-sorted = 43.6% (27/62); estrus, non-sex-sorted = 58.5%; (107/183); no estrus, sex-sorted = 33.9% (21/62), and estrus, sex-sorted = 50.0% (92/184)]; however, no interaction between the occurrence of estrus and type of sperm was observed (P = 0.87). In Exp. 3, a total of 200 suckled cows presenting LF ≥9 mm at TAI were randomly assigned to receive sex-sorted sperm deposited into the uterine body (n = 100) or into the uterine horn ipsilateral to the recorded LF (n = 100). No effect of deeper AI on P/AI was found (P = 0.57). Therefore, the LF diameter at TAI and the occurrence of estrus can be used as selection criteria to identify cows with greater odds of pregnancy to receive sex-sorted sperm in TAI programs. In addition, performing TAI with sex-sorted sperm deeper into the uterus did not alter the pregnancy results.</description><subject>Animals</subject><subject>Animals, Suckling</subject><subject>Cattle</subject><subject>Estrus Synchronization - methods</subject><subject>Female</subject><subject>Insemination, Artificial - methods</subject><subject>Insemination, Artificial - veterinary</subject><subject>Lactation</subject><subject>Male</subject><subject>Pregnancy</subject><subject>Sex Preselection - veterinary</subject><subject>Spermatozoa - physiology</subject><issn>1525-3163</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo1kElPwzAQhS0kRMty5Ip85JLiGeM4OaKKTarUC5wjxxkXl2zYiVh-PZYop9GMPr157zF2CWKFCvXN3sQVCoDsVqE8YktQqDIJuVyw0xj3QgCqUp2wBSIKlWtcMrcdJ9_5H9_v-PRGfI7EB8cjfWVxCBM1PI4UOu57nri0mjB55603bbpF6nxvJj_0fAzDLpgucjcEHmf73ia4JnLcDp_xnB0700a6OMwz9vpw_7J-yjbbx-f13SYbEWDKCqFsoXUurQOoRY1krRNCUE1lYcDVWkgsm7I0GqExtsnTAwUa0BTK5SjP2PWfbrLzMVOcqs5HS21rehrmWIGAQuZlkeuEXh3QuU7BqjH4zoTv6r8b-Qt6jmWZ</recordid><startdate>201206</startdate><enddate>201206</enddate><creator>Sá Filho, M F</creator><creator>Girotto, R</creator><creator>Abe, E K</creator><creator>Penteado, L</creator><creator>Campos Filho, E P</creator><creator>Moreno, J F</creator><creator>Sala, R V</creator><creator>Nichi, M</creator><creator>Baruselli, P S</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>201206</creationdate><title>Optimizing the use of sex-sorted sperm in timed artificial insemination programs for suckled beef cows</title><author>Sá Filho, M F ; Girotto, R ; Abe, E K ; Penteado, L ; Campos Filho, E P ; Moreno, J F ; Sala, R V ; Nichi, M ; Baruselli, P S</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p211t-805c87763cf11b0b2eccf000ebe98a1fb70329d99a721dacd6eef51712a85f623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Animals</topic><topic>Animals, Suckling</topic><topic>Cattle</topic><topic>Estrus Synchronization - methods</topic><topic>Female</topic><topic>Insemination, Artificial - methods</topic><topic>Insemination, Artificial - veterinary</topic><topic>Lactation</topic><topic>Male</topic><topic>Pregnancy</topic><topic>Sex Preselection - veterinary</topic><topic>Spermatozoa - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sá Filho, M F</creatorcontrib><creatorcontrib>Girotto, R</creatorcontrib><creatorcontrib>Abe, E K</creatorcontrib><creatorcontrib>Penteado, L</creatorcontrib><creatorcontrib>Campos Filho, E P</creatorcontrib><creatorcontrib>Moreno, J F</creatorcontrib><creatorcontrib>Sala, R V</creatorcontrib><creatorcontrib>Nichi, M</creatorcontrib><creatorcontrib>Baruselli, P S</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of animal science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sá Filho, M F</au><au>Girotto, R</au><au>Abe, E K</au><au>Penteado, L</au><au>Campos Filho, E P</au><au>Moreno, J F</au><au>Sala, R V</au><au>Nichi, M</au><au>Baruselli, P S</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optimizing the use of sex-sorted sperm in timed artificial insemination programs for suckled beef cows</atitle><jtitle>Journal of animal science</jtitle><addtitle>J Anim Sci</addtitle><date>2012-06</date><risdate>2012</risdate><volume>90</volume><issue>6</issue><spage>1816</spage><epage>1823</epage><pages>1816-1823</pages><eissn>1525-3163</eissn><abstract>Three experiments were designed to evaluate methods to optimize the use of sex-sorted sperm in timed AI (TAI) programs for suckled beef cows. In all 3 experiments, suckled Bos indicus cows were synchronized using an intravaginal progesterone (P4) device during 8 d and a 2.0-mg injection of intramuscular estradiol benzoate (EB) at device insertion. The females received PG and eCG (300 IU) at P4 device removal and 1.0 mg of EB 24 h later. The cows were inseminated 60 to 64 h after P4 device withdrawal. All cows had their ovaries scanned by transrectal ultrasound at TAI to indentify and to measure the largest follicle (LF) present. In Exp. 1, a total of 853 cows had their LF classified as <9 mm or ≥9 mm at the time of TAI; these cows were then randomly assigned to 4 groups according to their LF diameter (<9 mm or ≥9 mm) and the type of sperm used (sex-sorted or non-sex-sorted). There was an interaction (P = 0.02) between the type of sperm and LF diameter beginning at TAI[non-sex-sorted ≥9 mm = 58.9%a (126/214); non-sex-sorted <9 mm = 49.5%b (106/214);sex-sorted ≥9 mm = 56.8%ab (134/236); and sex-sorted <9 mm = 31.2%c (59/189), a≠b≠c = P < 0.05]. In Exp. 2, suckled cows (n = 491) were classified immediately before TAI as having displayed estrus or not (estrus or no estrus) between P4 device removal and TAI. These cows were randomly assigned to 4 groups according to the occurrence of estrus and the type of sperm (sex-sorted or non-sex-sorted). There were effects of the occurrence of estrus (P = 0.0003) and the type of sperm (P = 0.05) on pregnancy per AI [P/AI; no estrus, non-sex-sorted = 43.6% (27/62); estrus, non-sex-sorted = 58.5%; (107/183); no estrus, sex-sorted = 33.9% (21/62), and estrus, sex-sorted = 50.0% (92/184)]; however, no interaction between the occurrence of estrus and type of sperm was observed (P = 0.87). In Exp. 3, a total of 200 suckled cows presenting LF ≥9 mm at TAI were randomly assigned to receive sex-sorted sperm deposited into the uterine body (n = 100) or into the uterine horn ipsilateral to the recorded LF (n = 100). No effect of deeper AI on P/AI was found (P = 0.57). Therefore, the LF diameter at TAI and the occurrence of estrus can be used as selection criteria to identify cows with greater odds of pregnancy to receive sex-sorted sperm in TAI programs. In addition, performing TAI with sex-sorted sperm deeper into the uterus did not alter the pregnancy results.</abstract><cop>United States</cop><pmid>22205672</pmid><doi>10.2527/jas.2011-4523</doi><tpages>8</tpages></addata></record> |
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| source | MEDLINE; Oxford University Press Journals All Titles (1996-Current) |
| subjects | Animals Animals, Suckling Cattle Estrus Synchronization - methods Female Insemination, Artificial - methods Insemination, Artificial - veterinary Lactation Male Pregnancy Sex Preselection - veterinary Spermatozoa - physiology |
| title | Optimizing the use of sex-sorted sperm in timed artificial insemination programs for suckled beef cows |
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