{"id":208,"date":"2021-06-08T17:25:01","date_gmt":"2021-06-08T15:25:01","guid":{"rendered":"https:\/\/www.aprc.sd\/?p=208"},"modified":"2021-06-08T17:25:02","modified_gmt":"2021-06-08T15:25:02","slug":"assessment-of-some-production-traits-of-butana-heifers-as-affected-by-age-and-calving-season","status":"publish","type":"post","link":"https:\/\/www.aprc.sd\/?p=208&lang=en","title":{"rendered":"Assessment of some production traits of Butana heifers as affected by age and calving season"},"content":{"rendered":"\n<p class=\"has-text-align-left wp-block-paragraph\"><strong>Summary<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\">The study investigated the effect of age at first calving and calving season on the first lactation performance of 203 Butana heifers maintained at Atbara Station during (1970\/2000). Heifers were grouped into early, medium and late ages at first calving- (&lt;42; 42-48 and &gt;48 months). Seasons were classified into hot (March \/August) and moderate (September\/February). Data were analysed using the computer program of SPSS.<\/p>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\">Age group significantly affected total lactation yield, lactation length, dry period and calving interval (P&lt;0.001). Older heifers at first calving were superior compared to the other two age groups producing 259.54kg (23.18%) more milk. However, their lactations were longer by 31.5 days (12.59%) than the youngest age group.<\/p>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\">The dry period and calving interval of the youngest age group were 60.35 (29.92%) and 28.11 (6.67%) days longer than those of the late maturing group.<\/p>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\">There was a significant season effect on total yield, days in milk and days dry (P&lt;0.05).The hot season calves realized 129.92kg greater yield (12.49%) in a 14.02 days longer (5.82%) lactation, but with a correspondingly shorter dry period(17.8 days less, 9.68%) compared with the moderate season.<\/p>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\">Age and season of calving affected the productive traits in question with the greatest yield and longest duration achieved by late maturing cows and in the hot season.<\/p>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\">post <a href=\"https:\/\/www.sud-jap.sd\/2021\/02\/07\/assessment-of-some-production-traits-of-butana-heifers-as-affected-by-age-and-calving-season-2\/\">link<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Summary The study investigated the effect of age at first calving and calving season on the first lactation performance of 203 Butana heifers maintained at Atbara Station during (1970\/2000). Heifers were grouped into early, medium  &#8230;.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-208","post","type-post","status-publish","format-standard","hentry","category-news-and-artical-en"],"_links":{"self":[{"href":"https:\/\/www.aprc.sd\/index.php?rest_route=\/wp\/v2\/posts\/208","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.aprc.sd\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.aprc.sd\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.aprc.sd\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.aprc.sd\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=208"}],"version-history":[{"count":1,"href":"https:\/\/www.aprc.sd\/index.php?rest_route=\/wp\/v2\/posts\/208\/revisions"}],"predecessor-version":[{"id":209,"href":"https:\/\/www.aprc.sd\/index.php?rest_route=\/wp\/v2\/posts\/208\/revisions\/209"}],"wp:attachment":[{"href":"https:\/\/www.aprc.sd\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=208"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aprc.sd\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=208"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aprc.sd\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=208"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}