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, 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’re able to best see the effectation of the fresh new crossbreeding towards the intimate precocity of crossbreed pets, the latest AFC is reviewed sites web de rencontres arabes according to: crossbreed sort of, race of sire parents (bull and you may inseminated local cattle), hybridization top and you may stock facilities
New suggest age initially calving for everybody breeds built is actually ± months, representing just as much as 3 years (2 years 11 months 19 months ± eleven weeks day). The essential precocious heifers calved within this 2 years ( months). To own fifty% out of heifers, basic calving was at months. The first functions happened an average of during the ± days ( so you can months).
This new suggest AFC of the crossbreeds is actually lower than those individuals advertised one of several Zebu according to the tropics on more 40 weeks claimed in several knowledge ( Rahman et al., 2016 ; Tellah mais aussi al., 2015a , 2015b ; Bashir and you will El Zubeir, 2013 ; Sokouri ainsi que al., 2010 ; Bayemi mais aussi al., 2005 ). , 2015 ). Particular people provides said overall performance really close to the observance towards the various other crossbreeds inside the Africa, notwithstanding cow breeds found in the fresh experiment: 34 days among the Montbeliard crossbreeds inside the Algeria ( Madani and you can Mouffok, 2008 ) and you can Morocco ( Srairi and you will Mousili, 2014 ), ± 0.43 days regarding Girolando crossbreed into the Benin ( Doko et al., 2012 ). It actually was an equivalent towards Holstein-Friesian hybrid cattle when you look at the Ethiopia on thirty six.cuatro ± step 1.seven weeks, new Borgou and you will Lagunaire breeds within 36.1 ± 6.29 days into the Benin ( Adamou-Ndiaye et al., 2003 ) along with this new Azawak Zebu at thirty-six.5 ± cuatro.ten and you will ± thirteen months in Niger ( Achard and you may Chanono, 2006 , 1997 ).
All of our observance try greater than people reported by the Genzebu mais aussi al. (2016) one of hybrid cattle when you look at the Kenya (26.nine ± 5.cuatro and you may twenty-seven.0 ± 3.7 months). It was a little a lot better than the findings of the Ngodigha mais aussi al. (2009) off 31.eight ± dos.5 months among crossbreeds (Holstein x Bunadji) in the Nigeria, Ben Salem ainsi que al. (2009) out of 30.eight ± cuatro.12 months inside the Holstein during the Tunisia and you may Srairi and you may Mousili (2014) out-of 31 weeks into the Montbeliard inside the Morocco. Specific variation issues of this AFC were examined to achieve the comments.
One of several different crossbreeding types recognized ( Desk step one ), the newest Fulani Zebu (FZ) inseminated that have sperm away from Montbeliard (MB x FZ) and Alps Brown (Ab x FZ) provides produced the absolute most precocious corssbreeds (first calving within 24 months) (5%). When you are, brand new inseminations out of Fulani Zebu cattle toward sperm away from Holstein (HT x FZ) and you can out of Tarentaise (T x FZ) then the insemination of Gudali Zebu cattle with semen off Montbeliard (MB x GZ) features delivered the newest precocious crossbreed cattle.
The minimum try days and restriction was weeks
Desk step one: Decades initially calving (months) based on crossbreeding input whole milk cows facilities in the region out-of Bobo-Dioulasso for the Burkina Faso
The analysis worried about the newest breeding track of twenty (20) crossbreed cattle as a result of the new interbreeding through the artificial insemination anywhere between local breed cattle (Gudali Zebu and you may Fulani Zebu) and you may exotic reproduce bulls (Holstein, Alps Brownish, Tarentaise, Montbeliard). This type of crossbreeds had been produced ranging from 1999 and you may 2010 and gave the first calf between 2002 and you can 2012 on around three increased inventory facilities from inside the urban and you may residential district aspects of Bobo-Dioulasso. Every one of these farms keeps regarding fifty crossbreed cattle when you look at the creation. The initial ranch is situated in an urban area, next 10 Km out during the southern area hop out together with 3rd 60 Kilometer away within east exit out of Bobo-Dioulasso. Original surveys between on these portion aided to select such about three farms which have a cattle register (heat and artificial insemination keeping track of sheets). Events related to individual tabs on animal reproduction such calving schedules, schedules of very first heating and you will inseminations have been registered day-after-day because of the the latest cattlemen additionally the inseminators. Brand new exploitation of these data files managed to make it you can to determine twenty (20) first calving’s comparable to the original features. Such farms are characterized by the presence of lost, a good herd wellness overseeing, a guided reproduction form (primarily AI, for lack of a specified bull), this new concentrate supplies (pure cotton pie otherwise cottonseed and you will industrial malt) on the ration eating and you can intense distribution out of silage and agricultural by the circumstances. The sole reason for so it procedure sort of ‘s the production and you can profit away from yourself canned milk products, twice daily (day and you can nights). The new centers is actually supported towards pets to their return off grazing plus in brand new morning from the milking date.