Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means recensione incontri milf, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.
So you can ideal see the aftereffect of the newest crossbreeding for the intimate precocity of hybrid pets, brand new AFC is actually examined predicated on: hybrid type, race away from sire moms and dads (bull and you may inseminated regional cattle), hybridization top and stock facilities
The newest imply decades in the beginning calving for all types make try ± days, representing whenever three-years (a couple of years 11 days 19 months ± 11 weeks a day). Many precocious heifers calved contained in this 24 months ( months). To own 50% regarding heifers, first calving was at weeks. The first attributes were held normally during the ± months ( so you’re able to weeks).
Brand new imply AFC of your crossbreeds is lower than people claimed one of the Zebu beneath the tropics in the more forty months advertised a number of knowledge ( Rahman mais aussi al., 2016 ; Tellah mais aussi al., 2015a , 2015b ; Bashir and Este Zubeir, 2013 ; Sokouri et al., 2010 ; Bayemi ainsi que al., 2005 ). , 2015 ). Some article writers provides reported abilities very alongside the observation towards the other crossbreeds into the Africa, regardless of cow breeds used in the fresh test: 34 weeks among the many Montbeliard crossbreeds inside Algeria ( Madani and you will Mouffok, 2008 ) and you will Morocco ( Srairi and you can Mousili, 2014 ), ± 0.43 days throughout the Girolando hybrid in Benin ( Doko mais aussi al., 2012 ). It was an equivalent into Holstein-Friesian hybrid cows within the Ethiopia at thirty six.4 ± step 1.seven days, new Borgou and you can Lagunaire breeds at the 36.1 ± 6.31 months in the Benin ( Adamou-Ndiaye et al., 2003 ) and also in new Azawak Zebu within thirty six.5 ± cuatro.10 and you will ± 13 months for the Niger ( Achard and Chanono, 2006 , 1997 ).
The observation is actually higher than the individuals stated because of the Genzebu ainsi que al. (2016) certainly one of hybrid cows from inside the Kenya (26.9 ± 5.cuatro and you can twenty seven.0 ± 3.seven months). It was a bit much better than brand new findings because of the Ngodigha ainsi que al. (2009) away from 31.7 ± dos.5 months certainly one of crossbreeds (Holstein x Bunadji) when you look at the Nigeria, Ben Salem ainsi que al. (2009) off 31.eight ± cuatro.12 months in Holstein in Tunisia and you may Srairi and you can Mousili (2014) of 31 weeks when you look at the Montbeliard when you look at the Morocco. Particular adaptation issues regarding the AFC was indeed reviewed so you can reach the statements.
One of the some other crossbreeding designs understood ( Table 1 ), brand new Fulani Zebu (FZ) inseminated having semen off Montbeliard (MB x FZ) and you may Alps Brown (Ab x FZ) provides lead more precocious corssbreeds (first calving during the couple of years) (5%). While you are, the fresh new inseminations off Fulani Zebu cows towards the sperm from Holstein (HT x FZ) and you can out of Tarentaise (T x FZ) then insemination away from Gudali Zebu cows with semen of Montbeliard (MB x GZ) keeps lead the brand new precocious crossbreed cattle.
Minimal is actually days plus the restrict is actually weeks
Table step 1: Decades at first calving (months) predicated on crossbreeding enter in whole milk cows facilities in your community away from Bobo-Dioulasso in Burkina Faso
The research focused on new reproduction monitoring of twenty (20) hybrid cows as a result of brand new interbreeding from fake insemination ranging from regional breed cattle (Gudali Zebu and Fulani Zebu) and you can amazing breed bulls (Holstein, Alps Brownish, Tarentaise, Montbeliard). These types of crossbreeds were born anywhere between 1999 and you may 2010 and you may offered its basic calf between 2002 and you may 2012 to your around three increased stock facilities into the urban and you may suburban areas of Bobo-Dioulasso. Each of these farms provides throughout the fifty crossbreed cattle inside production. The original ranch is located in an urban area, the second ten Kilometer aside from the southern leave as well as the 3rd 60 Km aside during the eastern exit out-of Bobo-Dioulasso. Initial studies ranging from in these portion assisted to pick this type of about three farms with a livestock register (temperatures and you will phony insemination monitoring sheets). Situations pertaining to personal monitoring of creature breeding including calving schedules, schedules of your own basic warms and inseminations had been filed everyday because of the the fresh cattlemen as well as the inseminators. The new exploitation ones data managed to get you’ll to determine twenty (20) first calving’s comparable to the first services. This type of farms was described as the current presence of lost, good herd fitness monitoring, a led reproduction means (primarily AI, having insufficient a specified bull), the fresh focus provides (pure cotton pie or cottonseed and commercial malt) on the ration serving and you will extreme distribution of silage and farming from the products. The only real function of that it process method of is the production and you may selling off manually canned dairy, twice daily (day and you may night). Brand new focuses is actually supported toward pets on the get back out of grazing plus in the brand new morning at milking time.