Gain of body mass in kids after weaning depending on body mass and age
Prirast jaradi posle odlučivanja u zavisnosti od telesne mase i starosti
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Very important moment in breeding of kids is time of weaning. It is known that kids should suck mother’s milk approximately 4 months depending on the breed and production method. However, the need for kids to be weaned as early as possible is present so that greater quantities of milk could be placed on market. Kids can be weaned before age of 4 months using milk replacers of various manufacturing compositions. In certain cases producers are not able to provide milk replacers to kids, therefore the issue of age or body mass of kids which can be considered as adequate for their weaning without negative consequences is raised. Trial was carried out in two repetitions and processed as single entirety. Female kids - Serbian White goat breed from individual herd were used in investigation. In order to determine the effect of age and body mass at weaning investigation was carried out in two directions: 1 - weaning of kids according to their age at weaning, 40 to 90 days, five (5) groups were... formed with interval of 10 days, investigation included 100 kids; 2 - weaning of kids according to body mass at weaning, from 14 to 24 kg, five (5) groups were formed with interval of 2 kg, investigation included 180 kids. Weaning of kids was carried out suddenly during last 10 days of March (depending on age and body mass). After weaning kids were fed ad libitum concentrate and alfalfa hay. One month after weaning kids were fed in combined stable pasture way. Each kid was measured/weighed at birth and at weaning. Objective of this paper was to investigate the effect of age and body mass of Serbian White kids at weaning on their gain after weaning if no milk replacers are introduced in their nutrition. The following was concluded: • Kids which were older at weaning and had greater body mass also showed better gain after weaning; • It is not recommended that kids of body mass bellow 18 kg or younger than 65 days be weaned without milk replacers; • It is possible to wean without milk replacers kids of body mass from 18 to 23 kg and age from 65 to 90 days, however gain after weaning will be lower if kids were lighter or younger at weaning. This is recommended only in conditions when the possibility for use of milk replacers is excluded. Considering current situation of goat production in Serbia, issue of inexpensive kid breeding but with increased milk production is raised. These trials indicate possibility for early weaning of kids before usual time, but also consequences if adequate age and body mass of kids aren’t considered in case milk replacers aren’t included into nutrition of weaned kids.
U odgajivanju jaradi vrlo važan momenat predstavlja vreme njihovog odlučivanja. Poznato je da jarad treba da sisaju majčino mleko oko četiri meseca zavisno od mase i načina proizvodnje. Međutim sve više se javlja potreba da se jarad zaluče ranije, kako bi se na tržištu pojavile što veće količine mleka. Odlučivanje jaradi je moguće i pre četiri meseca i to putem zamene majčinog mleka raznih fabričkih receptura. U izvesnim slučajevima odgajivači nisu u mogućnosti da obezbede jaradima zamenu za mleko, pa se postavlja pitanje izbora starosti, odnosno telesne mase jaradi, koja se može smatrati dovoljnom da se njihovo odlučivanje može izvesti bez štetnih posledica. Cilj rada je bio ispitivanje uticaja starosti I telesne mase jaradi srpske bele koze u trenutku odlučivanja na njihov prirast posle odlučivanja, ukoliko se u ishranu ne uključi zamena za mleko.
Keywords:kids / weaning / body mass / Serbian white goat / jarad / odlučivanje / telesna masa / srpska bela koza
Source:Savremena poljoprivreda, 2006, 55, 1-2, 182-186
- Dnevik-Poljoprivrednik AD, Poljoprivredni fakultet i Naučni institut za ratarstvo i povrtarstvo, Novi Sad