Role of Nutrition in Body Weight Gain and Early Onset of Puberty and Sexual Maturity in (HF X Kankrej) Crossbred Heifers

Dhami, A. J.; Hadiya, K. K.; Chaudhari, D. V.; Lunagariya, P.M.; Sarvaiya, Nilesh; Shah, S. V.

doi:10.5455/ijlr.20190712123201

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“…The nutritional intervention has been shown to enhance puberty and AFC in dairy heifers (Day and Nogueira, 2013;Gupta et al, 2016). It has also been shown to accelerate the growth rate, ovarian dynamics, and endocrine profile congenial for the onset of early puberty and conception (Roberts et al, 2009;Pinheiro et al, 2010;Dhami et al, 2019). However, the literature on the effect of such nutrition on blood biochemical and mineral profile is meager.…”

Section: Effect Of High Plane Of Nutrition On Blood Biochemicalmentioning

confidence: 99%

Effect of High Plane of Nutrition on Blood Biochemical Profile and Onset of Puberty in Prepubertal HF X Kankrej Crossbred Heifers

Hadiya

Dhami

Chaudhari

et al. 2019

IJVSBT

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This study was initiated on 24 prepubertal Holstein x Kankrej crossbred heifers of nearly identical age (7-9 months) and body weight (130-140 kg) at University farm to evaluate the effect of high plane of nutrition on blood biochemical and minerals profile and the age at puberty. Twelve heifers were managed under routine farm feeding (control) and the rest 12 under ideal optimum feeding regime (treatment) that included extra 1 kg concentrate, 30 g min mix and ad-lib dry fodder. The body weight and ovarian ultrasonography together with blood sampling was carried out at monthly interval from 10 to 18 months of age to study the ovarian dynamics and blood biochemical changes. High plane of nutrition to growing heifers was beneficial in reducing the age of onset of puberty (by 2-3 months) compared to routine farm fed group. The mean plasma total protein and cholesterol concentrations showed a rising trend with significant variations from 10 to 16 months of age, where it got mostly stabilized indicating adult profile. The activity of enzymes GOT and GPT also rose gradually and significantly from 10 months till 14-15 months of age, and thereafter it remained more or less static till 18 months of age. The levels of both these enzymes were higher, with lower protein and cholesterol, in control than the treatment group from 15-16 months of age onwards. The mean plasma levels of both calcium and phosphorus increased gradually and significantly with advancing age till 16-17 months of age, with little higher values in supplemented than a control group. The plasma levels of zinc, iron, copper, and cobalt also showed rising trend with significant differences between 10th and 12th-14th months of age, and from 15th to 18th months of age the levels were statistically the same in all the groups with slightly higher values in the treatment group.

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